| AH-1Z Viper |
versus |
Challenger 2 |
|
|
|
| Attack helicopter |
Type |
Main battle tank |
|
|
|
| 30 September 2010 - present |
Service Period and Status |
1998–present |
|
Unit cost:
US$27 million
US$31 million (new built) |
Program & Unit Cost |
Unit cost
£4,217,000 |
|
| 2000–present |
Production Period |
1993–2002 |
|
|
|
| Bell AH-1 SuperCobra |
Related Projects |
|
|
| 8 December 2000 |
First Flight |
|
|
Empty weight:
12,300 lb / 5,580 kg
Useful load:
5,764 lb / 2,620 kg
Max. takeoff weight:
18,500 lb / 8,390 kg |
Mass / Weight / Displacement |
62.5 tonnes / 61.5 long tons / 68.9 short tons
75.0 tonnes / 73.8 long tons / 82.7 short tons combat ready weight with add-on armour modules |
|
| 58 ft 3 in / 17.8 m |
Length |
8.3 m / 27 ft 3 in
13.50 m / 44 ft 3 in with gun forward |
|
|
Width / Beam |
3.5 m / 11 ft 6 in
4.2 m / 13 ft 9 in) with add-on armour modules |
|
| 14 ft 4 in / 4.37 m |
Height |
2.49 m / 8 ft 2 in |
|
|
Ground Clearance |
0.5 m / 1 ft 8 in |
|
| 2: pilot, co-pilot/gunner (CPG) |
Crew |
4 (commander, gunner, loader/operator, driver) |
|
| 6,661 lb / 3,021 kg |
Payload |
|
|
| 2 × General Electric T700-GE-401C turboshaft, 1,800 shp (1,340 kW) each |
Powerplant |
|
|
|
Fuel Capacity |
1,592 litres / 350 imp gal / 421 US gal |
|
| 4 blades on main rotor, 4 blades on tail rotor |
Rotor Systems |
|
|
| 48 ft / 14.6 m |
Rotor Diameter |
|
|
| 1,808 ft² / 168.0 m² |
Disc Area |
|
|
Never exceed speed:
222 knots / 255 mph / 411 km/h in a dive
Cruise speed:
160 kt / 184 mph / 296 km/h |
Speed |
59 km/h / 37 mph on road
40 km/h / 25 mph off road |
|
Range:
370 nmi / 426 mi / 685 km
Combat radius:
125 nmi / 144 mi / 231 km with 2,500 lb (1,130 kg) payload |
Operational Range |
550 km / 340 mi on road
250 km / 160 mi off road on internal fuel |
|
| 20,000+ ft / 6,000+ m |
Service Ceiling |
|
|
| 2,790 ft/min / 14.2 m/s |
Rate of Climb |
|
|
|
Power-to-Weight Ratio |
19.2 hp/t (14.3 kW/t) at 62.5t
16.0 hp/t (11.9 kW/t) at 75.0t |
|
|
Armament |
Main armament:
L30A1 120 mm rifled gun with 47 rounds
Secondary armament:
Coaxial 7.62 mm L94A1 chain gun EX-34 (chain gun)
7.62 mm L37A2 Operator/Loader's hatch machine gun |
|
|
Armor |
Chobham / Dorchester Level 2 (classified) |
|
|
Engine |
1,200 bhp (890 kW) Perkins CV12-6A V12 diesel 26.1 litre |
|
|
Transmission |
David Brown TN54E epicyclic transmission (6 fwd, 2 rev.) |
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|
Suspension |
Hydropneumatic suspension |
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